Four-shaft non-anharmonic vibrating screen and screening method thereof

Abstract

The invention belongs to a four-shaft non-anharmonic vibrating screen and a screening method thereof. The vibrating screen comprises a box, a feeding inlet is formed in the top of one end of the box,a screen body is arranged on the box, the screen body is of a trapezoid frame structure with the inclination, large top and small bottom, the two ends of the screen body are each fixedly provided witha plurality of sets of screen net tensioning devices from top to bottom, a middle beam is arranged between the screen net tensioning devices, a screen net is arranged between the middle beam and thescreen net tensioning devices, a plurality of supporting beams are arranged at the bottom of the screen net, a plurality of discharging outlets are formed in the bottom of the box, a screen cover is arranged between the box and the upper middle portion of the screen body, two four-shaft thin oil vibration exciters are arranged at the top of the screen body, a middle shaft is arranged between driving shafts of the two four-shaft thin oil vibration exciters, and the outer side of the driving shaft of one four-shaft thin oil vibration exciter is connected with a motor through a drive shaft. The vibrating screen has the advantages of being simple in structure, reasonable in design, low in cost and high in screening efficiency, facilitating material layering and through screening and avoiding material blockage.

Description

Technical field [0001] The invention belongs to the technical field of screening equipment, and specifically relates to a four-axis non-harmonic vibrating screen and a screening method thereof. Background technique [0002] According to the movement trajectory, the vibrating screen is divided into circular vibrating screen (single shaft), elliptical screen (double shaft or three shaft), linear screen (double shaft), the projection of the circular vibrating screen or elliptical screen on the vertical plane is A circle or an ellipse, the projection of the motion track of the linear screen on the vertical plane is a straight line, the above three linear vibrating screen materials are stratified during the screening process and the force on the screen is the same, because the materials are screened The irregularity of its own shape, when the particle size of the screened material is close to the aperture of the screen, the phenomenon of blocking the hole of the screen is very serious...

AI Technical Summary

Problems solved by technology

[0003] At present, the vibrating screen used for sand and gravel aggregate screening is the traditional three-layer circular vibrating screen, which is seriously blocked during use. Due to the limitations of materials and processing technology, the traditional circular vibrating screen has complex equipment structure, Bulk, low screening efficiency, weak processing capacity, dry oil lubrication is generally used for equipment lubrication, short refueling cycle, heavy daily maintenance workload, high maintenance equipment costs, etc.

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